High Voltage Phase Cable Spacers

High Voltage Phase Cable Spacers

High Voltage Phase Cable Spacers

At my federal agency we have a 12.47kV overhead line that is strung using individual insulators on each utility wooden pole. The poles are spaced at approx. 150' from each other and is about 2 miles long. On each run between cables large insulating balls were installed to avoid phase contact during high wind situations. This has not worked entirely because some balls have become water laden during winter and the water has frozen. The added weight has increased the cable sag and high winds have caused some phases to wrap around and cause faults.

Two solution methods have been suggested. Namely, remove the balls and use cross arms at each pole to separate the phases or use remove the balls and use phase to phases insulated spacers to keep the lines from coming into contact with each other.

The preferred method would be the spacers, but we cannot located any supplier or manufacturer.

RE: High Voltage Phase Cable Spacers

Thanks for your reply, but the insulating balls do have holes and the water did freeze inside one of the balls causing the scenario described above. Our preference at this time is to install insulated spacers.

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